Security Hardening

How to Deploy a Symfony Application on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Deploy a Symfony Application on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying deploy a symfony application on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Deploy a Symfony Application on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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AlmaLinux 8 — driverctl — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — driverctl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:1752 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 12 — puppetserver — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — puppetserver — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 April 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: puppet — Unsafe HTTP Redirect Related CVEs: CVE-2018-1000180 CVE-2018-1000613 CVE-2020-7943 CVE-2021-27023 Upstream summary: Puppet reports: A flaw was discovered in Puppet Agent and Puppet Server that may result in a […]

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AlmaLinux 8 — libfastjson — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libfastjson — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:6976 Related CVEs: CVE-2020-12762 Upstream summary: The libfastjson library provides essential JavaScript Object Notation (JSON) handling functions. The library enables users to construct JSON objects in C, output them as JSON-formatted strings, […]

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SLES 12 — libexif12 — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libexif12 — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 14 April 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:1534-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-13112 CVE-2020-0452 CVE-2019-9278 CVE-2020-13113 CVE-2020-0181 CVE-2020-0198 CVE-2020-0093 CVE-2020-12767  +11 more Upstream summary: An issue was discovered in libexif before 0.6.22. Several buffer over-reads in EXIF […]

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How to Configure Active Directory Auditing on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Active Directory Auditing on Windows Server 2016

How to Configure Windows Server 2016 Active Directory Auditing Active Directory auditing is a critical security practice that allows administrators to track changes and access events within a Windows Server 2016 domain environment. By enabling and configuring audit policies, you can log who made changes to user accounts, group memberships, Group Policy Objects, and other […]

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Oracle Linux 8 — bind — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — bind — security and stability fixes — required update (ELSA-2021-4384)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4384 Related CVEs: CVE-2021-25214 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 117892

Ubuntu 18.04 LTS Stuck at GRUB Prompt After Upgrade

🟠 High   ⏱ 5–30 min  Last verified: 13 April 2021 Affected versions: 18.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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How to Configure SAN Multipathing with MPIO on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure SAN Multipathing with MPIO on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure san multipathing with mpio on ibm aix 7.1 […]

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AlmaLinux 8 — rpm-mpi-hooks — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — rpm-mpi-hooks — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:4412 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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CHAT